# BUET University Question - 5 Marks
def change(p,q=30):
    p = p + q
    q = p - q
    print(p,'#',q)
    return p
a = 150
b = 100
a = change(a, b)
print(a,'#',b)
b = change(b)

# Answer:-->
# 250 # 150
# 250 # 100
# 130 # 100
